[PATCH 5.4 129/151] gpio: pcie-idio-24: Fix IRQ Enable Register value

[Greg Kroah-Hartman]

From: Arnaud de Turckheim <quar...@gmail.com>

commit 23a7fdc06ebcc334fa667f0550676b035510b70b upstream.

This fixes the COS Enable Register value for enabling/disabling the
corresponding IRQs bank.

Fixes: 585562046628 ("gpio: Add GPIO support for the ACCES PCIe-IDIO-24 family")
Cc: sta...@vger.kernel.org
Signed-off-by: Arnaud de Turckheim <quar...@gmail.com>
Reviewed-by: William Breathitt Gray <vilhelm.g...@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszew...@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/gpio/gpio-pcie-idio-24.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/gpio/gpio-pcie-idio-24.c
+++ b/drivers/gpio/gpio-pcie-idio-24.c
@@ -360,13 +360,13 @@ static void idio_24_irq_mask(struct irq_
        unsigned long flags;
        const unsigned long bit_offset = irqd_to_hwirq(data) - 24;
        unsigned char new_irq_mask;
-       const unsigned long bank_offset = bit_offset/8 * 8;
+       const unsigned long bank_offset = bit_offset / 8;
        unsigned char cos_enable_state;
 
        raw_spin_lock_irqsave(&idio24gpio->lock, flags);
 
        idio24gpio->irq_mask &= ~BIT(bit_offset);
-       new_irq_mask = idio24gpio->irq_mask >> bank_offset;
+       new_irq_mask = idio24gpio->irq_mask >> bank_offset * 8;
 
        if (!new_irq_mask) {
                cos_enable_state = ioread8(&idio24gpio->reg->cos_enable);
@@ -389,12 +389,12 @@ static void idio_24_irq_unmask(struct ir
        unsigned long flags;
        unsigned char prev_irq_mask;
        const unsigned long bit_offset = irqd_to_hwirq(data) - 24;
-       const unsigned long bank_offset = bit_offset/8 * 8;
+       const unsigned long bank_offset = bit_offset / 8;
        unsigned char cos_enable_state;
 
        raw_spin_lock_irqsave(&idio24gpio->lock, flags);
 
-       prev_irq_mask = idio24gpio->irq_mask >> bank_offset;
+       prev_irq_mask = idio24gpio->irq_mask >> bank_offset * 8;
        idio24gpio->irq_mask |= BIT(bit_offset);
 
        if (!prev_irq_mask) {